can one of you experts tell me what you think of this?

When the "StopListening!" button is pressed, a series of configuration changes is applied that will close all wide-open (technically, in a "Listening" state) TCP and UDP server ports that come with each and every copy of Windows 2000/XP shipped, thus shielding you from any future Sasser-like worm infections. Protocols that are closed by StopListening include SMB, NBT, DCOM, SSDP, IPSEC, and Task Scheduler. Just run a "netstat -a" to verify for yourself. While this does not remove the need for a good firewall, it does provide an added layer of protection to the security-conscious PC user.